Year	current US$
1988	461637800
1989	515231000
1990	616783000
1991	846437095.5044295
1992	499281995.8454241
1993	259899979.45938697
1994	221104386.56860033
1995	733981709.1702815
1996	817897099.4197493
1997	819002692.5014915
1998	968379300.6116656
1999	1150500619.5141747
2000	567051952.8313758
2001	509604052.05961275
2002	589304664.9475561
2003	845963287.2405115
2004	694425245.0149046
2005	690074416.9078317
2006	1096370750.7611837
2007	851311151.856994
2008	1316343804.5384338
2009	1462025359.673936
2010	2963430877.323342
2011	2731413816.6610303
2012	2400327897.7689342
2013	2664693022.8220315
2014	2507849253.525409
2015	2075046904.570211
2016	1912328263.3375907
2017	2547302846.1598344
2018	2632999402.0066757
2019	2783420157.959482
2020	3302892146.5423737
2021	3780060983.982399
2022	3212646643.2249675
2023	2750071159.9560537